General Description
The AS13704D consists of four current-controlled transconductance amplifiers OTA, each with differential inputs and a push-pull output. All amplifiers share common supplies, but operate independently. Linearizing diodes are provided at the inputs to reduce distortion and allow higher input levels. The result is a 10-dB signal-to-noise improvement referenced to 0.5 percent THD.

FEATUREs
• gm adjustable over 6 decades
• excellent gm linearity
• excellent matching between
   amplifiers
• linearizing diodes for reduced output
   distortion
• high output SNR
• LM13700 functional replacement
   (without output buffers)

APPLICATIONs
• current-controlled amplifiers
• stereo audio amplifiers
• current-controlled impedances
• current-controlled filters
• current-controlled oscillators
• multiplexers
• timers
• S&H circuits